I believe Joseph Cook and Sons was Scottish or British.  If the piece were by them there would be the silver purity mark 925 with the appropriate hallmarks.

owl4343 wrote:

Emerald is correct - if this is British, it would have 4 marks on it, in accordance with hallmarking law.  City, purity, year, and maker marks.

 

This site shows the J Cook & Sons mark to be different - the style of lettering is not the same:

http://www.illusionjewels.com/costumejewelrymarksj.html

 

And here's another piece on ebay where you can see the 4 stamps on it:

http://www.ebay.com/itm/ANTIQUE-EDWARDIAN-SILVER-BRACELET-JC-S-J-COOK-SONS-BIRMINGHAM-1913-/190647968761?pt=Vintage_Costume_Jewelry&hash=item2c638123f9

 

I will look in my US trademark book on Monday, it's at work.

Thanks Owl, thanks Emerald, I really do appreciate all the info.  Will look forward to Monday to see what you find!

Women are angels. And when someone breaks our wings, we simply continue to fly...on a broomstick. We are flexible like that.

Emerald, the style of lettering in the maker's mark is different than the OP's, though, so we still can't say for sure who made it.

But that one on Morning Glory is a Cook & Son's, because that lettering is their mark.  I wonder if it was legal to make jewelry without all of the hallmarks if it was for export?

Lads and Lasses, this is a Scottish Dirk called a "Sgian Dubh. " pronounced " sci-an due ", a close effort at it. So one would think the firm you are looking for would be Scottish as it is a pretty piece that would also sell as a souvenir. J.

So this could be Jacob Cohen and Son Jewelry.

This shows the lettering font is very plain, like your trademark, with no periods after each letter.

They were out of business by the time of my book, 1994, with no known adress.

There is a Jacob Cohen Sons listed in NY in the 1920 Jeweler's Circular :

http://books.google.com/books?id=t1UcAQAAMAAJ&pg=PA107&lpg=PA107&dq=jacob+cohen+and+son+jewelry&source=bl&ots=R-YZPGCHIN&sig=pq0EeZF6sN3FfdabzK5oZ2cxfHk&hl=en&sa=X&ei=6YUgUKb5KevpiwLl-YGICg&ved=0CEoQ6AEwAg#v=onepage&q=jacob%20cohen%20and%20son%20jewelry&f=false

Good catch, Owl.  Those 3 little letters were bugging me too.

 I think it also underscores that for people asking for identification  of their makers marks, we need to see it.  I did not realize since I starting looking them up that many share the same letters, with just subtle differences such as placement, script, even a period, telling them apart.